scholarly-metadata
OpenAIRE Graph
A European open-science knowledge graph that links hundreds of millions of research products, publications, datasets, software, and funding records. You can query it through its API or browse the Explore portal on the web. It is a good choice for tracing the connections between a paper and its underlying data, software, or grant, though the service is mid-migration to a new graph API in 2026 and its older search endpoints are being phased out.
Por que é útil e como funciona
OpenAIRE is the right resource when you need to trace the connections between a paper and its underlying data, software, or grant funding, particularly within European research. It aggregates metadata from thousands of repositories, Crossref, DataCite, ORCID, and national CRIS systems, then links the records into a unified knowledge graph. You can explore it interactively through the Explore portal or query it via the API. As of 2026 OpenAIRE is actively migrating to a new graph API, so the most current endpoint is under graph.openaire.eu rather than the older search service.
O que há dentro
Approximately 345 million research products as of March 2026, including around 215 million publications, 95 million datasets, and 800,000 software records, linked by more than 7 billion relationships and connected to 4 million grants from 368 funders.
Acesso via API
NEW https://api.openaire.eu/graph/ ... ; legacy https://api.openaire.eu/search/publications?doi= <doi>&format=json (deprecating)
Acesso
Programmatic API access (a key may be required, see the API tag).